Official specs from Steam

Sid Meier's Civilization V system requirements

Minimum and recommended PC specs as listed by the developer on Steam. Native macOS version available. Native Linux build available.

Minimum

OS *Windows® Vista SP2/ Windows® 7
ProcessorIntel Core 2 Duo 1.8 GHz or AMD Athlon X2 64 2.0 GHz
Memory2GB RAM
Graphics256 MB ATI HD2600 XT or better, 256 MB nVidia 7900 GS or better, or Core i3 or better integrated graphics
DirectX®DirectX® version 9.0c
Hard Drive8 GB Free
SoundDirectX 9.0c-compatible sound card
NoteOptimized for the touch-screen Ultrabook™ device

Recommended

OS *Windows® Vista SP2/ Windows® 7
Processor1.8 GHz Quad Core CPU
Memory4 GB RAM
Graphics512 MB ATI 4800 series or better, 512 MB nVidia 9800 series or better
DirectX®DirectX® version 11
Hard Drive8 GB Free
SoundDirectX 9.0c-compatible sound card
NoteOptimized for the touch-screen Ultrabook™ device

macOS minimum

OS10.12 (Sierra) Processor: Intel Core 2 Duo (Dual-Core) CPU Speed: 2.4 GHz Memory: 2 GB RAM Hard Disk Space: 8 GB Video Card (ATI): Radeon HD 2600 Video Card (NVidia): Geforce 8600 Video Card (Intel): HD 4000 Video Memory (VRam): 256MB Multiplayer: Internet (TCP/IP) and LAN (TCP/IP) play supported. Please note, it is possible for Mac and PC to become out of sync during updates. Within this short time period, Mac users will only be able to play other Mac users.
NOTICEThis game is not supported on volumes formatted as Mac OS Extended (Case Sensitive)
NOTICEThe following video chipsets are not supported for Civilization V: ATI Radeon X1000 series, HD 2400 Nvidia GeForce 7000 series, 8600, 9400 Intel GMA (950/X3100), HD 3000 NOTICE:The Mac version is only available in English, French, Italian, German, and Spanish.

macOS recommended

ProcessorIntel Quad Core
Memory4GB
CPU Speed2.4 GHz
Video RAM1GB

FAQ

What graphics card do I need for Sid Meier's Civilization V?

Minimum: 256 MB ATI HD2600 XT or better, 256 MB nVidia 7900 GS or better, or Core i3 or better integrated graphics. Recommended: 512 MB ATI 4800 series or better, 512 MB nVidia 9800 series or better.

How much RAM does Sid Meier's Civilization V need?

Sid Meier's Civilization V needs 2GB RAM at minimum, 4 GB RAM recommended.

How big is Sid Meier's Civilization V?

Sid Meier's Civilization V requires 8 GB Free.

Does Sid Meier's Civilization V run on Mac or Steam Deck/Linux?

Yes, there is a native macOS version. A native Linux build is available.